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Songbirds promote connectivity between riparian galleries and adjacent habitats

机译：鸣禽促进河岸画廊与邻近栖息地之间的连通性

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摘要

Riparian galleries are among the most vulnerable habitats in the world and are well known for their importance to the most specialized riparian bird species. In this study, we analyzed songbird composition, songbird diet, trophic ecology and seed dispersal in riparian galleries and adjacent Montado matrices in southern Portugal to address the importance of birds in promoting the connectivity between riparian galleries and adjacent habitats. We used fecal samples to compare diet, and blood samples to compare nitrogen stable isotopes from birds in these two habitats. The seasonal variation in the abundance of arthropods and fruits was evaluated in both habitats and seed movement between both habitats was assessed from fruits marked with fluorescence. Abundance of food resources for birds (arthropods and fruits) declined throughout the season in a similar way for both habitats, and there were strong similarities in the diet and trophic ecology of songbirds in the riparian gallery and adjacent habitat. In both habitats, birds preyed heavily on Hymenoptera and Coleoptera but birds more abundant in the Montado fed more on Araneae and Hymenoptera. Seeds were moved significantly more frequently from the riparian gallery into the adjacent Montado than vice-versa. Our results suggest that birds from the adjacent habitat move frequently to the riparian gallery to forage and disperse seeds into the adjacent habitat as they depart. This study shows that birds play an important role in promoting connectivity between riparian galleries and adjacent habitats.
机译：河岸画廊是世界上最脆弱的栖息地之一，并且以其对最专业的河岸鸟类的重要性而闻名。在这项研究中，我们分析了山脉内库和南部南部的蒙特多矩阵的鸣禽组成，鸣禽饮食，营养师生态和种子分散，以解决鸟类在促进河岸画廊和邻近栖息地之间的连通性方面的重要性。我们使用粪便样本来比较饮食和血液样本，以比较这两个栖息地中的鸟类的氮稳定同位素。在患有荧光标记的水果中评估了患有节肢动物和水果丰度和水果的季节性变化。栖息地的季节（节肢动物和水果和水果）的丰富食物资源在栖息地的一种季节下降，河岸画廊和邻近栖息地的鸣禽的饮食和营养生态存在强烈的相似之处。在两栖栖息地，鸟类在亨塞省和鞘翅目前捕食，但在蒙特多鸟类喂养更多的鸟类在阿兰西和亨仑省喂养。种子比反之亦然，从河岸画廊频繁移动得多。我们的研究结果表明，邻近栖息地的鸟类经常向河岸画廊移动，以便在他们离开时将种子饲养和分散到邻近的栖息地。本研究表明，鸟类在促进河岸画廊和邻近栖息地之间的连通方面发挥着重要作用。

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  • 来源
    《Ecological research》 |2021年第1期|45-56|共12页
  • 作者

    Almeida Ana Patricia; Gomes Marisa; Rabaca Joao E.; Ramos Jaime A.;

  • 作者单位

    Univ Evora Mediterranean Inst Agr Environm & Dev MED Lab Ornithol LabOr Evora Portugal;

    Univ Evora Mediterranean Inst Agr Environm & Dev MED Lab Ornithol LabOr Evora Portugal|Univ Coimbra Dept Life Sci Marine & Environm Sci Ctr MARE P-3030789 Coimbra Portugal;

    Univ Evora Mediterranean Inst Agr Environm & Dev MED Lab Ornithol LabOr Evora Portugal|Univ Evora Sch Sci & Technol Dept Biol Evora Portugal;

    Univ Coimbra Dept Life Sci Marine & Environm Sci Ctr MARE P-3030789 Coimbra Portugal;

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  • 正文语种 eng
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  • 关键词

    forest matrix; frugivorous birds; habitat complementarity; insectivorous birds; seed dispersal;

    机译：森林矩阵;野生鸟类;栖息地互补;食虫鸟;种子分散;

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